I bought an egg and than..kitty cat comes out !

House cat or domestic cat, domesticated member of the family Felidae, order Carnivora, and the smallest member of that family. Like all fields, domestic cats are characterized by supple low-slung bodies, finely molded heads, long tails that aid in balance, and specialized teeth and claws that adapt them admirably to a life of active hunting. Cats possess other features of their wild relatives in being basically carnivorous, remarkably agile and powerful, and finely coordinated in movement.